dovecot::postgres: Add possibility to specify database port
WIP: dovecot::logging: Enable log_timestamp configuration
dovecot::postgres: Make dovecot-sql.conf.ext template configurable
dovecot::postgres: Make dovecot-sql.conf.ext template configurable
dovecot::mail: Only add user, if not defined somewhere else
Remove duplicate test for 'dovecot-pgsql'
Remove trailing space